#!/usr/bin/env python
# encoding: utf-8

"""
@version: ??
@author: windblue
@contact: q418584383@gmail.com
@time: 2017/11/12 13:19
"""
import re

from bs4 import BeautifulSoup
from urllib.parse import urljoin

class HtmlParser(object):
    def parse(self, page_url, html_cont):
        if page_url is None or html_cont is None:
            return

        soup = BeautifulSoup(html_cont,'html.parser',from_encoding='utf-8')
        new_urls = self._get_new_urls(page_url,soup)
        new_data = self._get_new_data(page_url,soup)
        return new_urls, new_data

    def _get_new_urls(self, page_url, soup):
        new_urls = set()
        # /item/
        links = soup.find_all('a',href=re.compile(r'^/item/'))
        for link in links:
            new_url = link['href']
            new_full_url = urljoin(page_url,new_url)
            new_urls.add(new_full_url)
        return new_urls

    def _get_new_data(self, page_url, soup):
        res_data = {}
        res_data['url'] = page_url
        # lemmaWgt-lemmaTitle-title
        title_node = soup.find('dd',class_='lemmaWgt-lemmaTitle-title').find('h1')
        res_data['title'] = title_node.get_text()
        # lemma-summary
        summary_node = soup.find('div',class_='lemma-summary')
        res_data['summary'] = summary_node.get_text()
        return res_data